> The fix is a one-line change to > addons/artkp/ARToolKitPlus/src/TrackerSingleMarkerImpl.cxx, patch > attached. thanks for the fix. the patch is applied to git. http://git.savannah.gnu.org/cgit/fluxus.git/commit/?id=a06bdd39d0f438d0cccfa0ab703ed9c35e44360e best, gabor